// flex 布局
.flex{
    display: flex;
}
.flex-column{
    display: flex;
    flex-direction: column;
}
.flex-1{
    flex: 1;
}
// css 命名不能用 . 使用 - 代替
.flex-1-5{
    flex: 1.5;
}
.flex-3{
    flex: 3;
}
.flex-center{
    display: flex;
    align-items: center;
    justify-content: center;
}
.flex-between{
    display: flex;
    align-items: center;
    justify-content: space-between;
}

// 动态 button
/* From uiverse.io by @nikk7007 */
.dynamic-button {
    padding: 0.8em 1.3em;
    border: unset;
    position: relative;
    overflow: hidden;
    background-color: transparent;
    text-align: center;
    text-transform: uppercase;
    font-size: 14px;
    transition: .3s;
    z-index: 1;
    font-family: inherit;
    color: #fff;
    cursor: pointer;
    background: url('../assets/buttonBgc.png');
    background-repeat: no-repeat;
    background-position: center;
    background-size: 100% 100%;
   }
   
   .dynamic-button::before {
    content: '';
    width: 0;
    height: 300%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    background: #17C3B2;
    transition: .5s ease;
    display: block;
    z-index: -1;
   }
   
   .dynamic-button:hover::before {
    width: 105%;
   }
   
   .dynamic-button:hover {
    color: #111;
   }

.shadow{
    background: rgba(238, 238, 238, 0.1);
}